Marine foundation and method for making the same



May 13, 1930. J. JACOBS 1,758,56

MARINE FOUNDATION AND METHOD FOR MAKING THE SAME Filed Dec. 20, 1927 ATTORNE YJ 4Patented May 13, 1930 UNITED STATES PATENT OFFICE JACOB:rAcoBsoF corLEY, oHIo Application filed December 20, 1927. Serial No.241,329.

This invention relates to marine foundations and methods for making thesame.` The general purpose of the invention is to provide a marinefoundation capable of use 5 in waters of considerable depth and toprovide improved procedure whereby marine foundations may besuccessfully constructed in bodies of water of great depth.

Particularly the invention has for its ob- 10 ject the provision of ahollow perforated column of concrete or other suitable material forremaining submerged, one or more of which can be employed to fixedlysupport a structure in bodies of water so as to be able to withstandth.,A action of storms, ice or the like.

A further object is to provide a method for making and sinking saidcolumns in any depth of water.

The foregoing and other objects are obtained by the construction andmethod illustrated in the accompanying drawings and described below. Itis to be understood that the invention is not limited to the particularform thereof shown and described.

Of the accompanying drawings,

.Figure l is an elevation, partly in section, illustrating the improvedprocedure for sinking a column embodying the invention in a body ofwater;

Figure 2 is a plan view of the form employed for making the improvedcolumn; and

Figure 3 is a detail section, partly broken away, illustrating themanner of securing the inner and outer form parts together and formingthe perforations in the hollow column.

Referring to the drawings, the numeral 10 designates a hollow ortubular, reinforced concrete column preferably having perforations at11, 1l therein whereby, when sinking the column in a body of water andas it becomes embedded in the bottom thereof, the water will flow so asto equalize the pressure on its walls.

In making the column, a form including exterior shell 12 and interiorshell 13 is elnployed, these being connected together by bolts 145` 14extended through spacer sleeves a I5, 15 which also form theperforations 1l.

The column 10, as it is being made, is supported by derricks, cranes orother tackle, 16,

. 16, which may be carried on an annular float 17 or by suitablework-boats and are connected with the column adjacent the surface of thewater as shown.

The column l0 is progressively formed of concrete or the like`reinforcing rods 10, 10n being insertedtherein in the usual way and aseach section sets sufiiciently on a. lower section, it is lowered intothe water, the forms, if desired, being removed and used for building asucceeding section on top of the finished sections, this process beingcontinued until the column reaches and settles in the bottom.

It will appear from the foregoing that a simple, effective marinefoundation has been provided and also an improved procedure for sinkingthe same. It will be understood that the foundation disclosed herein isadapted for effective use,-not only in open bodies of water, but alsofor foundations on land which extend down into swampy land, quick-sands,and similar earth, water from such earth flowing into the tubular columnand equalizin pressure on the walls thereof.

Vhat is claimed is v That method of making a marine foundation whichcomprises progressively building. a tubular column of concrete with theuse of inner and outer form members having tubular spacer therebetweento form perforations in the column, and progressively lowering thecolumn as it is built while supporting the column with connectionsextending into the perforations thereof adjacent the surface until thecolumn reaches and settles in the bottom. the perforations serving topermit flow of water into the column to the same level as` the surface.

JACOB JACOBS.

